$A$ thermopile bolometer is used to detect:

When a body has the same temperature as that of its surroundings,which of the following statements is true?

In which process is the rate of transfer of heat maximum?

Compared to a white-skinned person,what does a dark-skinned person experience?

The temperature of a blackbody radiation enclosed in a container of volume $V$ is increased from $100^{\circ} C$ to $1000^{\circ} C$. The heat required in the process is

Three objects colored black,gray,and white can withstand hostile conditions up to $2800\,^oC$. These objects are thrown into a furnace where each of them attains a temperature of $2000\,^oC$. Which object will glow brightest?